怎样判断句子主句和从句,比如 No sooner had he closedhis eyes than he fell asleep.Not until he came back did I knew about it.这种倒装句主倒从不倒,可我不知道哪个是主句啊

怎样判断句子主句和从句,比如 No sooner had he closedhis eyes than he fell asleep.Not until he came back did I knew about it.这种倒装句主倒从不倒,可我不知道哪个是主句啊 怎样判断复合句的主句和从句（英语）怎样判断复合句的主句和从句例：There’s no light in the room,so you can hardly see anything 怎样辨别句子是主句和从句 怎样判断一个英语句子中谁是主句谁是从句? 怎样判断一个英语句子中谁是主句谁是从句 if 主句和从句怎样判断if中的主句和从句? 怎样看出一个句子中有没有主句和从句! 从句和主句怎样区分? 怎样区分主句和从句 怎样区别主句和从句 怎样区分主句和从句 怎样区分主句和从句 if条件状语从句,怎样判断主句和从句疑问句中 so引导的句子是从句还是主句 英语当中怎样区别主句和从句 怎样区分英语中的从句和主句? 英语中怎样区分从句和主句? 英语从句中怎么判断主句和从句